Adapter for push and pull jacks



Sep. 11, 1934. E; pAcHOwlcz 1,973,224

ADAPTER FOR PUSH AND FULL JACKS Filed Nov. 25. 1932 Patented Sept. 11,1934 1.978,224. I ADAPTER Fon PUpsH AND FULL JAoKs Edmund Pachowicz.Chicago, Ill., assgnor to Templeton, Kenly & Co. Limited, Chicago, Ill.,a corporation of Illinois Application November 25, 1932, Serial No.644,253

6 claims.` (01. 254-100) This invention relates to improvements v in`adapters for push and pull jacks, and it consists of the mattershereinafter described and more particularly ponted out in the appendedclaims.

Push and pulljacks which are almost universal because of themany uses towhich they may be' put, include a screw 'memberfhaving oppositelythreaded ends and associated with each end is a nut of peculiarconstruction; the screw member V ,being formed at a point between itsends with a means for turning the same. The nuts which are of arelatively small area are each so constructed that suitable extensionbars and chainsmay be Lattached thereto to push .certain spaced partsaway from each other or to pull the same toward Suchl jacks have .foundfavor in.

each other.

straightening vehicle frames, bodies, fenders and .axles and for many'other repair jobs. Because of the small area occupied by each nut, theuse of a push and pull jack as a lifting jack has been a limited one ifat all. l p

One of thei objects of the presentinvention is to provide a meanswherebya jack of the kind mentioned may be readily converted into a liftingjack, capable of standing upright alone and moved from one place of useto another without toppling over.

Another object of the invention isnto provide Van adapter for a jack ofthis kind which'may be readily applied to and removed therefrom so thatythe jack is universal in the many` uses to which it may be put.

Still another object of the invention is to provide an adapter basewhich is provided with means to receive either nut of the jack and'which base includes parts for detachably looking the nut and basetogether so as to convert the jack into a lifting jack.

These objects of the invention, as well as others, together with themany advantages thereof; will more fully appear as I proceed with myspecification. i

'In the drawing: v Fig. 1 is a perspective view of an adapterem bodyingmy inventionwhen in position with respect to a push .and pull jackproviding such a base therefor that the jack will stand alone and may beused asa lifting jack; and

Figi. 2 is a longitudinal sectional view through .'50 the adapter andone end of an` associatedpush band 'pull jack as'taken on the line 2-2of Fig. '1. o Fig. 3 is a detail horizontal sectional view through apart vof the jackas taken on the line 3-3 of Fig. I.

Referring now in detail Vtothat embodiment' of `oppositely threaded endportions v2---2 and a the invention,` illustrated in the accompanying.drawingz 1a indicates as a whole a jack of the kind now known as a pushand pull jack,'because in connection with certain accessories, suchaschains and extension bar, said jack .may be actuated to exert apressure,` pulling two spaced elements toward each other, or pushingsuch elements away from each other. As an` example of suchtelements, theside frame members of a vehicle chassis are mentioned, it being apparentthat such frame members, because of accidents are often sprung or benttoward or away from each other. p

Said jack comprises a screwmember l having ratchet wheel 3 midwaybetween said end fpor- .tionsl uponiwhich is rotatively mounted' a pawlcarryin'g member Li.` Said member 4 includes a laterally extendingsocket 5 for receiving an op- |erating lever 6 by which the member 4 maybe turned in the desired direction. Near saidso'cket said member 4 isprovided with a spring pressed pawl Bathat is bevelled off at. one sideof its ratchet wheel engagingz end. The other end of said pawl isprovided outside the member 4 with 1a knob '7 whereby the pawl may bewithdrawn and thenv turned about an angle of 180. When the knob isreleased, the pawl Springs back into operative engagement with theratchet wheel. By means of this arrangement, the pawl may be caused tooperatively engage the ratchet wheel for turning the same step by stepin either direction; the pawl merely clicking over the teeth of the'pawlin the other directionin the back and Vforth movement imparted to thelever. Thus the screw may be turned step by step in the properdirection, by means of the lever.

Upon each threaded end of the screw, an internally threaded nut 8 ismounted and'as both nuts are of the same construction and are reversible'end for vend and are also interchangeable, `a description of one willsuffice for'both. Each nut includes an internally threaded block-likebody 9 provided at one end with laterally spaced enlargements 10-10arranged to define a recess 1-1 in the associated end of the nut about apart of the associated end of the screw 1. In said en- `largements arealigned transverse openings 12 which may open into the recess 11. Nearthe other end of said body in the plane of and facing toward saidenlargements are hook shaped lugs 13-13 and on said other end of thebody are lugs .14 and 15 respectively, arranged in a'plane at a rightangle to the plane of said enlargements 10 and hook lugs 13respectively, said lugs `14; and 15 facing in opposite directions. Theenlargements 10 and lugs 14 and 15 have flat ends formed to provide slipresisting faces.

It is apparent that With the enlargements 10 facing away from each otheror toward the extremities of the associated screw ends, When said fiatend faces are engaged' between parts to `be spread away vfrom eachother'and when-the 'lever 6 is actuatecl to turn the screw in onedirection, this will cause said nuts to travel outwardly on therespective screw ends to push said parts away from each other.

The nuts may be removed from the respective screw ends andinterchangedfto:areverse'positionV Wherein the enlargements 110 dfone'nut fface the enlargements 10 of the other nut and likewise the hooklugs 13 of one nutwill face zthose zon the other nut. Thus if it isdesired to pull certain spaced parts toward each other, a chainis-passedaround each part and then the ends of each ohain 'are'hooked 'onto thelugs 'of 'an associated nut. When the screwl is turned in theproper'direction by means of the 'lever 16, the nuts are caused to'travel toward each other on 'their respective ends of the Vscrew 'andexert apull on the chainsia't- *tached to A*thelugs-'lB-of `the nuts.

i 'As the enlargeinents -1'0-of the vnutspresent Fbut a relative ysmallarea; i-t-Z-is apparen't that -it is somewha't lciiffi'cult to make thejack stand upr'ight upon 'one of 'the nuts as afb'ase'and especiallyupon a surface having an inc'lin'ation. To vmake such La jack usable'asa lifting mechanism capable of standing 'upright upon a'base ofsufiicient area, I 'provide :the following;

16 indicates'ia'fiat and preferably rectangular base plate ofjan areasubstantiallyjgreater than *that presented Vby Athe flat faces of theenlargements 10 of a"nut-8. Said base `plate is provided :at va suitable.point well 'within :its 'marginal edges with 'an 'opening A17 'of adiameter =slightly greater 'r "thanthatof the screw 1 'and 1on the topside'of 'said plate 'about said opening is a tubular 'boss"1 '8. VVThis'boss `'is 'of an'outside -diam'eter approximating 'that 'ofjthe recess11 in ;either nut 'and zis vof a Lheight approximating the depth offsafid recess.

' fOn one endof the plate 'andrising from the -top side *th'ereof is ahorizontally disposed iboss 19 lin which is'looated a 'spring `pressedlooking plunger 20. 'Said 'plungerjisarranged'a'distanceabove 1'the top'o'f "the plate 'corresponding to the v'distance 'be- *tween'the Jfiat'end 'faces 'of the Jenlargements -150 o'f 'a nut 'and 'the openings 12therein.

Said plunger :includes a bolt body 221 h-aving a head `22 at'one Aend`'of 'a 4diameter iapproximating fthatof'an'opening '12 and-on theother'end-of said 'stem outside the boss 19'is provided a knob i Aspring 24 surrounds the bolt body ``-21'between the head 22 and vouterend vof 'the l'boss '19 fand normally acts to ;project the bolt plunger2invv-'zirdly towa'rd the boss 18; Preferably the plate is made as aforging 'for sftrength,V and 4so 'that 'the boss '19 L'may be `drilledIfrom -its inner end Tto receive Athe A'bolt v'21, recesses 25 areprovided in both sides o'f the tubular boss in line vWithV said boltrecess in 'the boss '19.

When it is desired to employ Ithe jack as 'a lifting device, the nuts-are so dispose'd upon 1the nscrew 2 'that the -enlargements 1f0-1'0of'bothnuts face -outwardly in =cpposite fdirections. i With 'the nutsin fthis position the jack is 'arranged .in 'a perpendicular position,when ;the bottoni nut is vplaced down 'upon the base so that its recess'11 substantiaIly-surroundsthe boss 18 :and 'the fiat 'endsof theenlargements 10 'engag'eupon the top :surface of the base plate. Insorapplyingthenut,

V`loan turn, the screw tends to travel out of each nut and vthusicausevarelative movement of said nuts endwise o'f the screw to impart the liftdelsired. nfter manipulating the pawl 3a, through its knob K7, :airaising. or lowering movement may -be provided for; 'by swinging thelever 6 back and 'When 'it vis desired to again use the jack as either apush or pull jack, the knob 23 of the plunger is grasped and an outwardpull is exerted 9.5 thereon to w'ithdraw the head 22 from Itheopening'l-Z ein the nut soas to 'unlockrthe nut from the 4lb'ase.vr`Ifhis JWill |p'erm-it a Iseparation of the parts mentioned. i;

- By means of the "i nvention, a push fand pull 75100 'jackmayibereadily 'converted'into a lifting jack 'capable of .standing -alone inyfan upright position upon a base fof substantial area. The base-plate-described is indeed'fsimp'le Tin construction and 'easy lto 'apply toand' removeZ from anl associated 1105 push and pu'll jack and makesituniversal `in its use. 'i

While fin describing 'the invention, I have re'- ferred in detail-to theform, arrangement :and construction Aof 'the various parts lthereof,'the -same is to be considered -merely :as illust'rative, :so

thatI do not vwish to be limited thereto except 'as may be specificall-yset 'forth in the appended vfclaims.

'I c'laim as my invenftion: '31.15

1. In combination witha jack including a screwV 'havingoppositel-threa'ded ends,` a nut operatively en'gaged on each end lofsaidsorew, means for turning said`` screw relative to said'znuts, 'one:of said "nu'ts having an 'end 'recessan'd :an :openin'gmo 'ar-rangedatan angle to `'the .axisof said .'recess,'a base plate having a portionto engage. in said recessso as to properly 'position said nut on thebase plate and a spring pressed plunger carried by 'said base lplate fori detachable. 'engagernent 'lin C3225 said opening when said :nut is-soproperly'ipositioned on the base plate.

2. "Ini combination 'with -a jack including a screw 'having oppositelyVthreaded ends, a nut op'eratively engaged on each end of said screwfiigmeans `'for turning said screw. 'relative to said nuts, one-of said-nuts having an end recessa base plate having an opening therein 'and aboss on the topside ofsaid plate about 'said'opening said opening'being' adapted to receive said screw-:f 'and said -boss being adaptedto engage 'in said recess in said nut and means for detachably securingsaid nut and plate together against :relav'tive separation and turning.

.of said Vplate about said opening, said opening being adapted to`receive said screw and said `boss being adapted 'to engage in saidrecess in said nut and a spring pressed plunger carried 'by said .plate.for movement in a .plane at -a right angle .1:50

to the axis of said opening for detachably securing said nut and platetogether.

4. An adapter base for a push and pull jack embodying therein a fiatplate-like member having an opening therein, an upstanding boss on oneside of said member about said opening, a second boss on the same sideof said member and means in said last mentioned boss providing a springpressed plunger capable of movement in the plane of said plate membertoward and away from said first mentioned boss.

5. In combination with a jack including a screw having oppositelythreaded ends, a nut member operativeiy engaged on each end of saidscrew, means for turning said screw relative to said nuts, each nuthaving a recess in one of its ends, a base member having a boss on oneside thereof to be engaged by the end recess in either nut member whensaid nut member is engaged with said base member, and means carried byone of said members for engagement with a part of said other member todetachabhr secure them together against relative separation and turning.

6. An adapter base for a push and pull jack embodying therein a fiatplate-like member having an upstanding boss on one side at a pointspaced within its margins, a second boss on the same side of said memberand spaced laterally from the first mentioned boss and a member in saidsecond boss and capable of movement toward and away from the firstmentioned boss, so as to position its inner end at a point between saidbosses.

EDMUND PACI-IOWICZ.

